EP0689567B1 - Füllstoffpaste zur verwendung in basislacken zur beschichtung von polyolefin-substraten, basislacke sowie verfahren zur direktlackierung von polyolefin-substraten - Google Patents

Füllstoffpaste zur verwendung in basislacken zur beschichtung von polyolefin-substraten, basislacke sowie verfahren zur direktlackierung von polyolefin-substraten Download PDF

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Publication number
EP0689567B1
EP0689567B1 EP19940911161 EP94911161A EP0689567B1 EP 0689567 B1 EP0689567 B1 EP 0689567B1 EP 19940911161 EP19940911161 EP 19940911161 EP 94911161 A EP94911161 A EP 94911161A EP 0689567 B1 EP0689567 B1 EP 0689567B1
Authority
EP
European Patent Office
Prior art keywords
weight
basecoat
filler paste
filler
polyolefin substrates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19940911161
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German (de)
English (en)
French (fr)
Other versions
EP0689567A1 (de
Inventor
Frank Leibfarth
Hans-Josef Oslowski
Doris-Maria BÖHM
Andreas Göbel
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BASF Coatings GmbH
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BASF Coatings GmbH
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Filing date
Publication date
Application filed by BASF Coatings GmbH filed Critical BASF Coatings GmbH
Publication of EP0689567A1 publication Critical patent/EP0689567A1/de
Application granted granted Critical
Publication of EP0689567B1 publication Critical patent/EP0689567B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
    • C09D123/28—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/34—Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
    • C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer
    • Y10T428/31917—Next to polyene polymer

Definitions

  • the present invention relates to filler pastes for Use in basecoats for coating polyolefin substrates, containing such filler pastes Basecoats and processes for direct painting of polyolefin substrates.
  • polyolefins such as B. made of polypropylene
  • a direct and therefore primer-free coating of effect basecoats or plain basecoats on polyolefin substrates is problematic because, on the one hand liability to the subsurface is not guaranteed and on the other surface defects, such as B. flow lines, cannot be covered sufficiently.
  • a simple addition of chlorinated polyolefins as adhesion promoters to effect basecoats or plain basecoats is for coating polyolefin substrates disadvantageous for several reasons.
  • the one as an adhesion promoter chlorinated polyolefins used influence in Effect training for all common basecoats ("Flop") in a negative way.
  • the chlorinated polyolefins show strong incompatibilities with usual Basecoat binder systems.
  • Adhesion promoters used chlorinated polyolefins very much photosensitive, and they can with insufficient Sun protection in the paint system for premature weathering to lead.
  • DE-A-40 14 212 describes effect basecoats for coating known from polypropylene substrates, wherein the effect basecoats physically drying binders, chlorinated polyolefins, cellulose acetobutyrate, Effect pigments, e.g. B. metallic pigments or pigments based on mica platelets or mica platelets, possibly contain color pigments and organic solvents.
  • the basecoats described can be applied directly to the Plastic substrate can be applied without it Liability issues come up.
  • the from the DE-A-40 14 212 known effect basecoats for coating of plastic substrates without prior Priming the plastic substrates however, occurs Problem on that existing surface defects, such as e.g. B. flow lines, are not sufficiently covered can.
  • the Effect basecoats coated plastic substrates problems regarding the automotive sector Stone chip resistance.
  • Basecoats for coating polyolefin substrates such as B. polypropylene, polyethylene, polypropylene copolymers as well as polypropylene blends, such as PP-EPDM, for Be provided with a direct Painting the polyolefin substrates is possible means using primers when used can be dispensed with, which is a significant Saves costs.
  • the basecoats should have good adhesion to the polyolefin substrate, and they should, despite saving a primer especially for good coverage of surface defects, such as B. flow lines.
  • the task is surprisingly solved by a Filler paste A) used in basecoats, or by basecoats B) which are used for direct coating, d. H. primer-free or primer-free coating, of polyolefin substrates are suitable.
  • the filler paste A) is used in basecoats B) for direct Coating of polyolefin substrates used.
  • the individual components of the invention are described below Filler paste A) explained in more detail.
  • the filler paste A) contains 5 to 50% by weight, preferably 30 to 45 wt .-%, a polyurethane resin or several polyurethane resins al). It is about elastic, aromatic and / or aliphatic, branched or linear polyurethane elastomers with a good physical drying capacity and high specific volume.
  • the polyurethane elastomers can free hydroxyl groups available for crosslinking exhibit.
  • the physically drying polyurethane elastomers are high molecular weight on the one hand, on the other hand show them despite their high molecular weight good solubility or relatively low viscosity on.
  • Suitable polyurethane resins are commercially available under the designation Uraflex XP 221 and XP 222 (Manufacturer: DSM) and Desmolac 2100 (manufacturer: Bayer).
  • the filler paste A) according to the invention contains 0.5 to 13% by weight of one or more chlorinated polyolefins with a chlorine content of 10 to 40 wt .-%, based on the solid of the chlorinated polyolefins, and one average number average molecular weight of 5,000 to 150,000 (component a2).
  • the chlorinated Polyolefins are e.g. B. by direct chlorination of Polyolefins or by grafting modified Polyolefins manufactured. Such chlorinated polyolefins are familiar to the person skilled in the art and are commercially available.
  • a suitable commercial product of a solution the product is a chlorinated polyolefin resin Eastman CP 343-1 (manufacturer: Eastman).
  • the filler paste according to the invention contains component a3) A) 0 to 50% by weight, preferably 0 to 10 wt .-%, one or more different from al) physically drying binder.
  • Binders of this type are known to the person skilled in the art; these are common binders such as these are commercially available as paint raw materials.
  • suitable physically drying binders Polyester resins, alkyd resins, polyacrylate resins, cellulose derivatives, Melamine resins u. ⁇ ..
  • The are preferred differing from component a1), physically drying binder (a3) in a proportion of 0 to 10 wt .-% used.
  • the filler paste A) according to the invention contains 5 to 35% by weight, preferably 20 to 30% by weight, one or several fillers and / or extenders (component a4)).
  • suitable fillers and / or extenders are silicate fillers, such as kaolin (China Clay), talc, pebble, various types of mica, such as iron mica, and silicon carbide and quartz flour; carbonate fillers, such as for example chalk and dolomite; sulfate fillers, such as barium and calcium sulfate.
  • Component a4) is an essential component of Filler paste A) and leads to the one that mechanical-technological level (e.g. regarding Rockfall protection) is significantly improved, on the other but excellent optical coverage from Substrate defects is achieved.
  • inorganic color pigments are white pigments, such as for example titanium dioxide, lead white, zinc white, Black pigments, such as carbon black, colored pigments, for example iron oxide and chromium oxide pigments, oxidic mixed phase pigments.
  • white pigments such as for example titanium dioxide, lead white, zinc white
  • Black pigments such as carbon black
  • colored pigments for example iron oxide and chromium oxide pigments, oxidic mixed phase pigments.
  • metallic pigments according to the invention or effect pigments based on Mica platelets or mica platelets are used, as they e.g. B. in the field of automotive painting are common. It can also be electrically conductive Pigments are used.
  • color and Effect pigments including soot is optional and will only be used for the highest demands on color accuracy.
  • the pigment / binder ratio the filler paste according to the invention A) is about 1: 0.6-2.0, preferred 1: 1.3 - 1.8, when determining the pigment / binder ratio the term "pigment" all inorganic components, such as. B. Extenders and inorganic rheology aids.
  • the filler pastes A) according to the invention contain 0 up to 5% by weight of one or more rheology aids, such as B. waxes, associative thickeners, layered silicates, organically modified minerals u. like they are familiar to the person skilled in the art and are commercially available are.
  • the use of the rheology aids is optional and serves to meet the highest demands on the Stability of the wet film.
  • Component a7) of the filler pastes according to the invention consists of 20 to 60 wt .-% organic solvents. These are common paint solvents, such as low molecular esters, aromatics, glycol esters, Glycol ethers, etc., the organic solvents in particular on the compatibility with the used Polyurethane resins (component al)) are matched. The use of aliphatic and aromatic blending agents is therefore only possible to a limited extent. Examples for particularly suitable organic solvents are xylenes, Butyl acetate and ether or ester of propylene glycol.
  • the filler pastes A) according to the invention are produced by the intended pigments and extenders predispersed in a portion of the total binder and then to sufficient grain size be ground.
  • the chlorinated polyolefin is either portions of the grinding or - for smaller ones Amounts - admixed with the letdown mixture, which the Grist is then added. As a top-up mixture serve the remaining amount of binder and rheology aids and solvents.
  • the present invention also relates to basecoats B) for coating polyolefin substrates, wherein the basecoats B) the filler paste according to the invention A) in a proportion of 10 to 70% by weight contain.
  • the filler pastes A) are according to the present invention commercially available basecoats, the suitable for coating polyolefin substrates are added.
  • the present invention therefore relates to also basecoats B) for coating polyolefin substrates, which are characterized in that they 10 to 70 wt .-% of the filler paste described above A) and 90 to 30 wt .-% of a conventional basecoat composition C) containing one or more binders, optionally rheology aids, color and / or effect pigments and organic solvents, the total weight of the basecoats B) Is 100% by weight.
  • Basecoats B) 30 to 60% by weight of the filler paste A) and 70 to 40 wt .-% of a conventional basecoat composition C).
  • Usual basecoat compositions C) which together with the filler paste A) to the invention Basecoat B) can be combined from commercially available raw materials, such as polyesters, Polyacrylates, cellulose derivatives, rheology aids, such as B. waxing, and color and / or Effect pigments, such as metallic pigments and mica flakes.
  • the usual color pigments are already in the description of component a5) of the filler paste A) Pigments previously described.
  • Such Basecoats are known to the person skilled in the art and therefore need not to be described further.
  • Particularly preferred are used as a binder for the basecoat composition C) polyacrylate resins, polyester resins and alkyd resins are used, to which cellulose acetobutyrate is added.
  • the basecoats B) according to the invention described above can be used without priming the polyolefin substrates be applied to the surface, the coatings obtained have excellent adhesion and surface defects, especially flow lines, to be covered in an excellent way.
  • the present invention therefore also relates to a Process for direct coating of polyolefin substrates, which is characterized in that directly on the Polyolefin substrate containing the filler paste A) Basecoat B) is applied after a short intermediate ventilation a filler paste-free basecoat is applied, after flashing off with a clear varnish is painted over and then together under Heating is cured.
  • the basecoat according to the invention B) is therefore direct according to the present invention applied to the polyolefin substrate. It is it is possible, but not essential, that Polyolefin substrate of a pretreatment (flame treatment, Plasma, corona). After a short intermediate ventilation then a usual basecoat is applied, but which does not contain filler paste A).
  • suitable filler paste-free basecoats are the usual basecoat compositions already described above C) which one or more binders, Rheology aids, color and / or effect pigments and contain organic solvents. After flashing off again the coated plastic substrate with a conventional Overcoated clear varnish. Then the applied layers cured together under heating. For example, briefly venting is a venting at a temperature between 20 and 50 ° C to understand. Customary varnishes are commercially available available weatherproof clear coats are used. Isocyanate-curing agents are suitable for this, for example Two-component clear coats based on polyester or acrylic resins. Such coating systems are common and known to the expert.
  • the basecoat B) containing the filler paste A) is applied such that a dry film thickness results in the range from 12 to 17 ⁇ m.
  • the after a short Intermediate ventilation applied filler paste-free Basecoat is usually applied in a dry film thickness from 7 to 10 ⁇ m applied.
  • the method described above is particularly for Coating of polyolefin attachments in the automotive industry suitable, the polyolefin substrates preferably made of polypropylene and polypropylene blends, for example rubber-polypropylene blends will.
  • the polyolefin substrates preferably made of polypropylene and polypropylene blends, for example rubber-polypropylene blends will.
  • the polyolefin substrates both with and without pretreatment, such as e.g. B. flame, plasma, corona discharge to coat.
  • pretreatment such as e.g. B. flame, plasma, corona discharge to coat.
  • Process as polyolefin substrates for automotive parts made of plastic with a polypropylene content of up to 100 wt .-% used.
  • the advantage of the invention The procedure is in particular that on the previously necessary primer or pre-painting using adhesion promoters can be dispensed with.
  • By adding the invention Filler paste A) for a common basecoat system C) will have excellent adhesion as well a simultaneous excellent coverage of the usual Substrate defects, e.g. streaks, flow lines and pores.
  • By the subsequent coating with a filler paste-free basecoat excellent weather stability and color accuracy of the coatings obtained.
  • the usage The filler paste A) is for the high technological Level of the overall system, for example with regard to Stone chip resistance, responsible.
  • the Presence of color and / or effect pigments of the desired one Hues already in the first, modified Basecoat allows you to paint over with a very thin final basecoat.
  • the order all layers of paint is usually done by pneumatic spray applications.
  • electrically conductive pigments in the invention Filler paste A) is an electrostatic application of the other layers of paint possible.
  • the present invention also relates to the use the filler paste A) in basecoats for primer-free Coating of polyolefin substrates and the use of the one containing the filler paste A) Basecoat B) for primer-free coating of polyolefin substrates.
  • Sheets or attachments made from polypropylene / rubber blends (25 wt% EPDM, 75 wt% polypropylene) washed with isopropanol and dried.
  • the one previously described Basecoat B1 is applied with a gravity cup gun (Injection pressure: 4-5 bar, 1.3 mm nozzle) in one Cloister applied.
  • the dry layer thickness reached thereby 12 to 17 ⁇ m. After about 2 to 3 minutes. Flash off at cabin temperature, the unmodified basecoat in another cloister.
  • the dry film thickness of the unmodified basecoat film is approx. 7 to 10 ⁇ m. It takes place during Ventilation for 5 min at room temperature.
  • Example 1 The application of the two basecoat layers is analogous Example 1 carried out, being modified as filler paste Basecoat of the basecoat B2 used becomes.
  • the paint finish used in Example 1 Clear varnish is now applied after the part is grounded electrostatically assisted pneumatic pistols or via a high rotation bell.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Woven Fabrics (AREA)
  • Knitting Of Fabric (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
EP19940911161 1993-03-19 1994-03-12 Füllstoffpaste zur verwendung in basislacken zur beschichtung von polyolefin-substraten, basislacke sowie verfahren zur direktlackierung von polyolefin-substraten Expired - Lifetime EP0689567B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4308859A DE4308859A1 (de) 1993-03-19 1993-03-19 Füllstoffpaste zur Verwendung in Basislacken zur Beschichtung von Polyolefin-Substraten, Basislacke sowie Verfahren zur Direktlackierung von Polyolefin-Substraten
DE4308859 1993-03-19
PCT/EP1994/000772 WO1994021730A1 (de) 1993-03-19 1994-03-12 Füllstoffpaste zur verwendung in basislacken zur beschichtung von polyolefin-substraten, basislacke sowie verfahren zur direktlackierung von polyolefin-substraten

Publications (2)

Publication Number Publication Date
EP0689567A1 EP0689567A1 (de) 1996-01-03
EP0689567B1 true EP0689567B1 (de) 1998-12-09

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EP19940911161 Expired - Lifetime EP0689567B1 (de) 1993-03-19 1994-03-12 Füllstoffpaste zur verwendung in basislacken zur beschichtung von polyolefin-substraten, basislacke sowie verfahren zur direktlackierung von polyolefin-substraten

Country Status (11)

Country Link
US (1) US5709909A (ko)
EP (1) EP0689567B1 (ko)
JP (1) JP3021657B2 (ko)
KR (1) KR100306950B1 (ko)
CN (1) CN1066172C (ko)
AT (1) ATE174367T1 (ko)
BR (1) BR9406011A (ko)
DE (2) DE4308859A1 (ko)
DK (1) DK0689567T3 (ko)
ES (1) ES2127921T3 (ko)
WO (1) WO1994021730A1 (ko)

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DE59407450D1 (de) 1999-01-21
BR9406011A (pt) 1996-01-02
ATE174367T1 (de) 1998-12-15
JP3021657B2 (ja) 2000-03-15
KR100306950B1 (ko) 2002-11-27
KR960701151A (ko) 1996-02-24
CN1066172C (zh) 2001-05-23
DK0689567T3 (da) 1999-08-16
US5709909A (en) 1998-01-20
ES2127921T3 (es) 1999-05-01
WO1994021730A1 (de) 1994-09-29
JPH08503256A (ja) 1996-04-09
DE4308859A1 (de) 1994-09-22
CN1119451A (zh) 1996-03-27
EP0689567A1 (de) 1996-01-03

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